diff --git a/include/internal/catch_timer.hpp b/include/internal/catch_timer.hpp
index 988382b3..47d9536b 100644
--- a/include/internal/catch_timer.hpp
+++ b/include/internal/catch_timer.hpp
@@ -27,11 +27,11 @@ namespace Catch {
         uint64_t getCurrentTicks() {
             static uint64_t hz=0, hzo=0;
             if (!hz) {
-                QueryPerformanceFrequency((LARGE_INTEGER*)&hz);
-                QueryPerformanceCounter((LARGE_INTEGER*)&hzo);
+                QueryPerformanceFrequency( reinterpret_cast<LARGE_INTEGER*>( &hz ) );
+                QueryPerformanceCounter( reinterpret_cast<LARGE_INTEGER*>( &hzo ) );
             }
             uint64_t t;
-            QueryPerformanceCounter((LARGE_INTEGER*)&t);
+            QueryPerformanceCounter( reinterpret_cast<LARGE_INTEGER*>( &t ) );
             return ((t-hzo)*1000000)/hz;
         }
 #else